JPH09158201A - Construction method for foundation of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with the temporary placing of earth to be back-filled, improve safety, and rationalize construction by assembling, as a form material, panels formed of square corrugated steel plates set so as to continue the corrugated tops to each other, the upper and lower parts thereof being reinforced to use this as a sheathing material, arranging reinforcement bars in the inner part, and placing concrete thereon. SOLUTION: Permanent concrete 3 is placed on the bottom of excavation 1, and angle beams 4 are arranged in a beam length at proper intervals. The end parts of the angle members 4 are fixed by anchors 5. Panels 2 are welded to their end parts with the angle members 4 as a ruler. On the other hand, beam members 6 are erected on the upper parts of the parallel panels 2. The edge parts of the beam members 6 are fixed to shape steels 2b on the upper part of the panels 2. Further, piles 7 are driven in the middle between the beam members 6 and on the outside of the panels 2, and the piles 7 are connected to the shape steels 2b by reinforcements 8. This is used as a sheathing material, and the outside is back-filled 9. Beam main bars 10 are placed on the beam members 6, reinforcements are arranged in the inner part, and concrete is placed thereon. Thus, waste in process and cost can be avoided to rationalize the construction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation construction method for warehouses, apartment houses and other reinforced concrete buildings.

[0002]

2. Description of the Related Art In order to form the foundations of buildings such as underground beams and column foundations with reinforced concrete, after root cutting, a formwork is assembled at the bottom of this root cutting, and the concrete is arranged in the formwork. It is cast, demolded, and backfilled on the sides of the concrete foundation thus formed.

The root cutting may be carried out by using a cross sheet pile or the like, but if the upper opening width is made wider than the bottom width to keep the angle of repose, the root cutting may be unnecessary. Also, the backfill soil at the time of root cutting is placed in the temporary storage area until the foundation concrete is completed.

[0004]

[Background of the Invention] [Background of the Invention] As described above, since it is impossible to backfill until the foundation is completed, it is necessary to temporarily store the backfill soil at the time of root cutting. The work floor will be deeper and side scaffolding is required to proceed.

In addition, since the overdug portion is large when viewed two-dimensionally, it is difficult to secure a space for that portion, and it is difficult to secure a working passage and a place for use as a material storage area. This is supplemented by a passage scaffold, a stage, etc. Is the current situation.

After the root cutting, the reinforcing bars are assembled. However, since there are no supporting points for the column reinforcing bars and the main supporting bars for the beams, scaffolding is required.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example and to immediately backfill the uncut portion of the root cutting, so that no temporary storage space for backfill soil is required and a working floor can be easily secured. It provides a basic construction method for buildings, which improves safety and eliminates the need for scaffolding to support beam main and column reinforcements, eliminates process and cost waste, and can streamline construction. Especially.

[0008]

In order to achieve the above-mentioned object, the present invention firstly requires that after the root cutting, the square wave steel plate is made to have the peaks of the waves continuous in the lateral direction, and the upper and lower parts thereof are lightened. Panels reinforced with channel steel are assembled as formwork materials for underground beams and column foundations, etc., and the outside of the formwork material is backfilled as earth retaining material, and the interior of the formwork material is reinforced, The gist is to form a foundation by placing the.

Secondly, the lower part of the panel is welded and fixed to an angle member fixed with a hole-in anchor on the waste concrete as a ruler. Thirdly, the upper part of the panel is connected to the corners of the panels. Welding and fixing the horizontal firing angle on the outside, or beam members made of angle materials are installed at appropriate intervals between the panels, and at the middle of the beam materials, piles made of angle materials driven in parallel outside the panels are used. The main idea is to connect the heads with steel bars.

Fourth, the gist of the present invention is that a pillar made of an angle member is erected on the light channel steel at the upper part of the panel, and a cross member made of an angle member is laid on the pillar to form a column main bar receiving stand. Is.

According to the first aspect of the present invention, the panel assembled as a formwork material such as the underground beam and the column foundation can be used as a buried formwork that also serves as a retaining soil. Since it is possible to backfill in parallel with root cutting without placing concrete such as beams and removing the mold from the mold, there is no need to set up a temporary storage space for backfilled soil or transport costs. Furthermore, since the backfilled part returns to its original position immediately, it can be used as a work aisle, material storage, etc., eliminating the need for a work aisle scaffold, material storage, stage scaffolding, etc. It is also less dangerous and less dangerous in terms of safety.

According to the second aspect of the present invention, in addition to the above-mentioned action, as an example of fixing the lower part of the panel, by welding this as a ruler to an angle member fixed on a waste concrete with a hole-in anchor. Can be fixed accurately and easily.

According to the third aspect of the present invention, as an example of fixing the upper part of the panel, a horizontal firing angle can be used to easily fix the panel.

According to the present invention as set forth in claim 4, the beam member erected at an appropriate interval on the upper portion of the panel not only has a function as a cutting beam for fixing the upper portion of the panel, but also a receiving member for the main beam of the beam. Available as Also, at the middle of the interval between beam members, the whole is moved at the time of backfilling by connecting the heads with the piles and the reinforcing bars made of angle materials driven in parallel outside the panel.
It can be prevented from being deformed.

According to the fifth aspect of the present invention, by constructing the column main bar receiving base, it is possible to eliminate the need for a column temporary support scaffold and the like.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a vertical sectional front view showing one embodiment of an underground beam construction part in the basic construction method for a building of the present invention, FIG. 2 is a plan view of the same as above, and FIG. 3 is a side view of the same.

In the figure, reference numeral 1 is a root cutting portion, but after the root cutting, the panel 2 is assembled therein as a form member for an underground beam. This panel 2 is a roof deck plate V-50H,
A square corrugated steel sheet 2a with t = 0.8 is used vertically, that is, the crests of the wave are continuous in the lateral direction, and the light channel steel 2b is flowed horizontally at the upper and lower parts of the corrugated steel sheet 2a to reinforce the light channel steel. The square corrugated steel sheet 2a is sandwiched by 2b and screw-fastened (at every pitch) from the back-filling side to be integrated. If the panel length becomes long and a vertical joint appears, attach light channel steel vertically to that part and secure it with screws.

To assemble the panel 2, first, the root cutting 1
The waste concrete 3 is arranged on the bottom of the, the mark is made on it, and the angle members 4 cut in advance to the beam width are arranged at appropriate intervals along the beam length. Fix with hole-in anchor 5.

Then, the lower portion of the panel 2 is welded and fixed to the end portion of the angle member 4 by using the angle member 4 as a ruler.

On the other hand, between the upper parts of the parallel panels 2, beam members 6 which are angle members lacking vertical end portions at their ends and only horizontal pieces are left to serve as cutting edges are erected at appropriate intervals.
The blade edge part of the is light channel steel 2b on the upper part of panel 2 by welding.
Fixed to Since the main beam of the beam is taken in and arranged in the panel 2, it is desirable that one beam member 6 located at the end can be removed.

Further, in the middle between the beam members 6, outside the panel 2 and parallel to the panel 2, the angle member 1 is used.
A pile 7 of about m is driven in, and the pile 7 and the light channel steel 2b in the upper part of the panel 2 are connected by heads with a reinforcing bar 8.

In this way, the formwork material of the panel 2 is assembled by fixing the top and bottom thereof, and the backfill 9 is applied to the outside of the formwork material as an earth retaining material.

The beam member 6 uses this as a temporary receiving member, on which the beam main bar 10 at the upper end of the underground beam is placed, and further, the bar 2 is laid inside the panel 2 and concrete is placed. To form an underground beam. In the figure, 11 is slab concrete.

There is also a case where the floor is attached to the floor without disposing of the concrete, but in this case, a pile made of an angle member is attached to the panel 2 so as to extend downward, and the pile is driven into the floor. Fix the lower part of panel 2 with.

Next, the construction of the foundation of the column to which the underground beam is connected will be described with reference to FIGS. 4 to 6. In this case as well, after the root cutting, the waste concrete 3 is arranged at the bottom of the root cutting 1, and Marking is performed on the top of the angle member 4, and the end members of the angle members 4 previously cut by the width of the beam are fixed and arranged with the hole-in anchors 5. The angle member 4 is used as a ruler on the end portion of the angle member 4 for the panel 2 The point of welding and fixing the lower part of is similar to the construction of the underground beam.

An opening 12 is formed in the connecting portion with the underground beam,
Further, a light channel steel 13 was vertically attached to the side of the opening 12 so as to connect with the panel 2 as a form material for forming the underground beam.

The upper part of the panel 2 has the horizontal firing angle 14 welded and fixed to the mutual connecting corners of the panel 2 on the outside. The end of the horizontal firing angle 14 is fixed to the upper portion of the panel 2 as the form material by welding or the like.

Further, a pillar 15 made of an angle member is erected on the light channel steel 2b at the upper part of the panel 2, and a cross member 16 made of an angle member is laid on the pillar 15 to form a box-shaped pillar main bar cradle. 17 was set up.

After assembling the panel 2 as a form material in this manner, it is used as an earth retaining material and backfilled 9 is applied to the outside thereof.
In addition, the pillar main bar 18 is assembled by using the pillar main bar cradle 17 as a temporary support material, and concrete is placed to form the foundation of the pillar.

FIG. 7 shows a third embodiment of the present invention, in which the slab 19 on the first floor and the ground to be backfilled have a space. In this case, in the upper space part, a general plywood formwork 20 is assembled on the panel 2, and inside the formwork, the pillar-shaped upper main braces 21 by the angled columns and the cross members are mounted on the beam member 6. Start up, receive the upper main bar of the beam, and assemble the lower main bar and hoop reinforcing bar, and place concrete to construct the underground beam.

Also in this case, when the panel 2 is assembled, the backfill 9 can be applied to the outside of the panel 2 as an earth retaining material.

[0032]

As described above, according to the basic construction method for a building of the present invention, since the excavated portion of root cutting can be immediately backfilled, a temporary storage place for backfill soil is not required, and a work floor is used. It is also easy to secure, the safety is improved, and there is no need for scaffolding for supporting the beam main bars and column reinforcements, so waste in terms of process and cost can be eliminated and the construction can be rationalized.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing a first embodiment of a basic construction method for a building according to the present invention.

FIG. 2 is a plan view showing a first embodiment of a basic construction method for a building according to the present invention.

FIG. 3 is a side view showing the first embodiment of the basic construction method for a building of the present invention.

FIG. 4 is a vertical sectional front view showing a second embodiment of the basic construction method for a building of the present invention.

FIG. 5 is a plan view showing a second embodiment of the basic construction method for a building of the present invention.

FIG. 6 is a side view showing a second embodiment of the basic construction method for a building of the present invention.

FIG. 7 is a vertical cross-sectional front view showing a third embodiment of the basic construction method for a building of the present invention.

[Explanation of symbols]

1 ... Root cutting 2 ... Panel 2a ... Corrugated steel plate 2b ... Light channel steel 3 ... Scraped concrete 4 ... Angle material 5 ... Hole-in anchor 6 ... Beam material 7 ... Pile 8 ... Reinforcing bar 9 ... Backfilling 10 ... Beam main bar 11 … Slab concrete 12… Opening 13… Light channel steel 14… Horizontal fire angle 15… Struts 16… Cross members 17… Pillar main bracing frame 18… Pillar braces 19… First floor slab 20… Plywood form 21… Upper braces

Claims (5)

[Claims] 1. After completion of root cutting, a square corrugated steel plate is formed into a shape such as an underground beam or a column foundation by arranging a panel whose upper and lower parts are reinforced by light groove steel so that wave peaks are continuous in the lateral direction. Assemble as a frame material, use this form material as earth retaining material and refill the outside,
In addition, a foundation construction method for a building characterized by arranging the inside of the form material and placing concrete to form the foundation. 2. The foundation construction method for a building according to claim 1, wherein the lower portion of the panel is welded and fixed to an angle member fixed on the waste concrete with a hole-in anchor as a ruler. 3. The upper part of the panel has a horizontal firing angle welded and fixed to the connecting corners of the panels on the outside.
Or the basic construction method of the building according to claim 2. 4. A beam member made of an angle member is erected at an appropriate interval between the panels at the upper portion of the panel, and a head and a reinforcing bar made of an angle member driven parallel to the outside of the panel are provided in the middle between the beam members. The foundation construction method for a building according to any one of claims 1 to 3, which is connected. 5. The pillar main bar cradle is formed by erected a pillar made of an angle member on the light channel steel at the upper part of the panel and straddling a cross member made of an angle member on the pillar. Basic construction method of building described in either.